AirHint found the following cheapest return flights from Bucharest (BBU) to Bangkok (BKK) in September 2025 (see full year).

Return flights

25 Sep - 02 Oct	Wizz Air
23 Sep - 01 Oct	Wizz Air
17 Sep - 15 Oct	Wizz Air
19 Sep - 02 Oct	Wizz Air
21 Sep - 28 Sep	Wizz Air
26 Sep - 25 Oct	Wizz Air
22 Sep - 25 Sep	Wizz Air
20 Sep - 27 Sep	Wizz Air
18 Sep - 24 Sep	Wizz Air
25 Sep - 07 Oct	Wizz Air
27 Sep - 12 Oct	Wizz Air
28 Sep - 12 Oct	Wizz Air
22 Sep - 29 Sep	Wizz Air
21 Sep - 05 Oct	Wizz Air

Also check the deals for one-way flights from Bucharest to Bangkok in September.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in Bangkok

Cheap car rent in Bangkok

Cheapest return flights from Bucharest to Bangkok in September from $589

Return flights